21300320

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:264

約数の個数: 96

約数和(自身を含む): 54867456

約数和(自身を除く): 33567136

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 41, 68, 80, 82, 85, 136, 160, 164, 170, 191, 205, 272, 328, 340, 382, 410, 544, 656, 680, 697, 764, 820, 955, 1312, 1360, 1394, 1528, 1640, 1910, 2720, 2788, 3056, 3247, 3280, 3485, 3820, 5576, 6112, 6494, 6560, 6970, 7640, 7831, 11152, 12988, 13940, 15280, 15662, 16235, 22304, 25976, 27880, 30560, 31324, 32470, 39155, 51952, 55760, 62648, 64940, 78310, 103904, 111520, 125296, 129880, 133127, 156620, 250592, 259760, 266254, 313240, 519520, 532508, 626480, 665635, 1065016, 1252960, 1331270, 2130032, 2662540, 4260064, 5325080, 10650160, 21300320]

約数ペア:

[(1, 21300320), (2, 10650160), (4, 5325080), (5, 4260064), (8, 2662540), (10, 2130032), (16, 1331270), (17, 1252960), (20, 1065016), (32, 665635), (34, 626480), (40, 532508), (41, 519520), (68, 313240), (80, 266254), (82, 259760), (85, 250592), (136, 156620), (160, 133127), (164, 129880), (170, 125296), (191, 111520), (205, 103904), (272, 78310), (328, 64940), (340, 62648), (382, 55760), (410, 51952), (544, 39155), (656, 32470), (680, 31324), (697, 30560), (764, 27880), (820, 25976), (955, 22304), (1312, 16235), (1360, 15662), (1394, 15280), (1528, 13940), (1640, 12988), (1910, 11152), (2720, 7831), (2788, 7640), (3056, 6970), (3247, 6560), (3280, 6494), (3485, 6112), (3820, 5576)]